Combined cap and socket wrench used on and in connection with valves of pneumatic tires for wheels.



J. H. CROWELL.

GOHBINED GAP AND SOCKET WRENCH USED ON AND IN CONNECTION WITH VALVES 0F PNEUMATIC TIRES FOB WHEELS} APPLICATION FILED FEB. 9, 191! Patented Feb. 13, 1912.

' UNITED STATITES PATENT OFFICE.

COMBINED CAP AND SOCKET W'RENCH USIiiD 0h! AND IN CONNECTION WITH VALVES 0F PNEUMATIC TIRES FOR WHEELS.

Specification. of Letters Patent.

Patented Feb. 13. 1912.

Application filed February 9, 151i Serial No. Shift-'56.

To all whom it may concern:

Be :it known that I, Jenn ll. nowncr, a citizen of the United States, residing at Vine ald Haven, in the county of Dukes and i tate of Massacl'iusetts, have invented a new and useful Iinproven'ient in Combined Cap and Socket W'renches Used on and in Connection with Valves of Pneumatic Tires for Wheels, of which the following is a specification.

My invention relates to unpmvenients in the combined cap and socket wrench used on and in connection with valves of pneumatic tires for wheels; and the objects of my improvement are, first to guide said wrench; second, to shield said wrench and the end of the slen'der rod in the center of the valve plunger; third, to provide a dust cap and guard for the open end of the shield. I at tain these objects by the mechanism illus- 'trated in the accompanying drawings in which-1 Figure 1 is a longitudinal section of a portion of a pneumatic tire valve (with its plunger in elevation) as it appears with socket Wrench held in guides and applied to the'nut of the plunger; Fig. 2, a longitudi nal section of the combined cap and socket Wrench, shield, guide and dust cap as they appear screwed on to the end of the'valve Similar numerals refer to similar throughout the several views.

In the drawing 1, indicates the cylindrical, body member or shell of the valve with its plunger 5, in normal position. The socket wrench 2, as constructed in combination with cap 3, is shown in Fig. 1, in contact with nut 7, of the plunger The socket: wrench 2 is constructed (as shown) integral with and extending from one end and in the axial line of the cap-body 3, and is arranged and adapted for insertion in the threaded bore of the valve body 1, to thereby engage the nut 7 carried by the plunger 5. The guide and shield 4 is also constructed. prei erably integral with the body of the cap 3, and is tubular and formed, as shown, by the prolongation of the exterior wall of said cap extended beyond the outer end of the socket-wrench 2, so that, when the wrench 11 to be brought into engagement with the nut 7, the guide and shield 4 will slide longitudinally and freely over the externally threaded end of the valveshell 1, and be rotatable freely thereon in either direction,

parts and thereby hold and guide the wrench concentrirally with the nut 7 during the operations of seating or withdrawing the nut and its plunger 5, and further serve as a shield (by reason of its extension beyond the end ot the wrench continuing in contact with the end of the valve shell after the nut and wrench have been entirely withdrawn from the bore of said shell) to prevent the nutfrom falling'when entirely withdrawn from the bore, and so protect the valve plunger from injury. Dust cap 9 may be held on to the guide and shield, when the wrench is not in use, by screw threads, or by friction as shown in Pig. The slender rod 10, of the plunger moves freely inside of nut T and wrench 2.

Hcretofore in removing plunger 5, from valve shell 1, socket wrench 2, the outside diameter of ,which being a little less than the dian'ioter hi the threaded portion of the hole that extends through valve shell 1, is insorted into and. guided by said threaded portion to. and in locking contact with nut 7, of the plunger, as shown in Fig- 1,the turning backward of said so icet whom-h which be ing guided by said ti'irewlcd iluill'ilt' ll, unscrews nut 7, perfectly, until the end of said wrench comes out flush with the end of the valve shell. at which point it loses contact with its guide. and becomes free to slip off of the nut and thereby not only is it liable to injure the slender rod 10, but thereafter is not easily retained in. contact with said not 7, in order to unscrew it sufliciently to allow the plunger to be removed from, the valve shell, and also to the same degree injury and inconvenience occur in screwing said nut to its normal position in the valve shell. N ow it is atthis point. of inconvenience and liability of injury that the value of my im- IIHUVCIHQIlt asserts itself, as follows, Member 54, being attached to socket wrench 2, and in longitudinal sliding contact with the outer threaded surface 8, of the body member or shell 1, and extending a sufficient distance beyond the end of said wrench, guides said wrench perfectly and keeps it in con centric contact; with nut 7, until said nut has been entirely unscrewed from said 'valve shell, thereby releasing said plunger without injury or accident, and to the same degree said wrench is held in perfect. concentric contact; with said nut by said member 4, while said out with its plunger is being screwed to its normal position in the valve shield annularly surrounding said wrench shell. The rubber washer 6, acts as a seal and extending beyond the outer end thereof, 5 to close the end of the valve 1, vvhen cap 3, and arranged and adapted for longitudinal is screwed on to it as shown in Fig. 2. sliding movement on the end of, a valve shell 1 claim and desire to secure by Letters to retain said wrench in concentric engage- Patent-- ment with the valve operating nut, and to A guide and shield for a socket wrench be rotated. on said valve shell in one direc- 20 'for valves of pneumatic tires, consisting of tion to Withdraw the valve and in the oppoa cap having a body provided with a socket site direction to seat the valve.

Wrench projecting from the top of and in 4 J OHN H. CROVVELL. the axial line of said body, and having the Witnesses: 7 exterior wall of said body prolonged longi- JAMES H. Pinon,

tudinally to constitute a tubular guide and. S. FLORENCE CROWELL. 

